Full reference: S. D. Webb, B. L. Beatty, and G. Poinar, Jr. 2003. New evidence of Miocene Protoceratidae including a new species from Chiapas, Mexico. Bulletin of the American Museum of Natural History279:348-367

Type specimen: UCMP V99089/173300, a partial skull (skull missing rostrum and zygomatic arches). Its type locality is Simojovel (Balumtum Sandstone), which is in a Miocene terrestrial conglomerate in the Balumtum Sandstone Formation of Mexico.